Steam-trap



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'lm/ENTER: .yi/M' K I `WTNE5SEE1 Wgff t vUNITED STATES PATENT FFTCE."

. STEAM-TRAPA sPncrrIcATIoN forming part of Letters patent noeoaseo, ated Mav 31,1898.,

Applicationld May 18, 1896.- Renewed November 11,1897. Serial No. 658,203. (No model.)

To @ZZ who-mit mayconcern.-` Y. v

yBe it known. that I, BURTON W. HILL, of

' Somerville', in the county of.- Middlesex and -State of Massachusetts, have invented certain new and useful Improvements in Steam- Traps, of which the following is a specification.

` vThisv invention relates to steam-traps of the type .illustrated -in my Patent No. 550,886,

dated December 3, 1895,-the object ofwhich is tov receive the water ofvv condensation from Va steam-heatingsystem and return said wa- `character invwhich a vacuum is created' in the chamberfor receiving the water of condensation, in order that said'water may be forced into said chamber more'readily', partly due to the pressure of steam` behindit, -withoutregardto therelative elevation'of the trap and heating System;V e l To. these ends the invention consists, in

ithe construction and combination of parts, substantially as r hereinafter vdescribed and claimed.

`In the accompanying drawings, Figure 1 f represents a perspective view of a steam-trap embodyingvmy improvements.

Fig. 2 represents a side elevation of the same, lookin gin 1.-'.thedirection of the arrowin Fig. l. Fig. 3

l vrepresents a sectional plan View on the line 3' 3 of Fig. 2 and looking in thedirectionv of the arrow in said figure. Fig. 4 is an enlarged sectional detail View on the line 4 4 of Fig. 3. Fig. 5 is a sectionron line 5 5 of Fig.'

. 4, looking in thedirection 'of the arrow 2. l Fig.`

6is a section online 6 6 of-Fig. 4, looking inA thedireetion of the arrow 3. Fig. 7 isa sec.- tion jon line 7 A7 of Fig. 4, looking in the direction of .thearrow 4. Fig. 8 is a section on a suitable.supporting-frame, lwhich in the line 8.48ct Fig. 3. Fig. 9 is an enlarged'sec-v tional-detail view-of the valve.

'Similar letters of reference indicate the samefpartsithrughout theseveral views.'

a represents a vchamber of suitable form,

preferably such as thechamber d inthe patent' 'above referred to. This chamber o. is

connected by a short pipe with the hollow shaft b, journaled in bearings c, formed upon present instance. is located upon 'the boiler,

the -frame and trap being above the level of the boiler.. The chamber is normally maintained at a suitable angle by means of a weight the shaft. The .shaft Yto which the chamber is vattached is provided with 'a pipeor passage d, which communicates with the chamber a, as shown in Fig. 3, said passage being connected with a pipe e by a suitable expansionjoint e', said pipe e being connected. with 'branch pipes f f', the pipe f leading tol the 4boiler andI the pipe fbeing connected with the system to be drained. The pipes ff are provided .with check-valves g g', theobject ot` which is to prevent the passage of water in b', adj ust-ablysecured to a rod projecting from the direction the reverse of the 'arrows vshown in Fig. l adjacent to said vpipes f sage 7L, (see Figs. 3 and 4,) which passage Thev ltubularshaft b is also provided with a pasconnects withl the interiorof a valve casing or chamber 72.2, said casing being rigidly' sel cured to the shaft, so as to turn therewith'. This valve-casing and its contained parts are somewhatof the type shown in my applicai tion Serial No. 576,515, filed January 23, 1896. n

A pipe 71.3 leads from the valve-casing to the live-steam-supplypipeh4, from which steam is admitted .into the. chamber @through the valve casing and passage hand througha l pipe h5, which connects the passage h with the upper end of the chamber a, as shown in Figs.

l and 3.

'The construction of the valve mechanism 'is illustrated in Figs. 4 to 7, inclusive, particu'larly Fig. 4, in which it will be seen that the casing h2- is loosely mounted upon the pipe h3, which is stationary, the inner-end ofsaid pipe h3 being provided with a iange c', carryinv two uideins'vlz'2 which'extend through b D p 7 openings in a dis-k i3. Said' diskis provided 4-with a'stem' vlhaving a steep-pitched screwg .thread i5, which engages with'internal threads'l of a sleeve i6', havin g flanges 0.7 z8, adapted to casingand partly in the edge of-,the flange v, as shown in Figs.'4 and 5.

lloo

n receive a packing-Washer or dist:

, eti/neen The disk 113 is formed with a concave face, to which. is fitted av disk im, heid thereon by means of a suitable iiange im; which projects inward over an annular shoulder of the disk i3". The face of the disk i3" is recessed to i, said disk constituting the,y valve proper, adapted to iit the seat-j, formed on the inner end of the pipe it. i

The chamber o is provided with a suitable Z and with an ainvent 7. (See Fig.

7e represents a standard or stop adapted te limit the downward movement ot the chainber o, and fm, represents a runway carried by the shaft b and supporting Weight m', the object of which is to hold the chamber and the shaft in either of its extremes of position until the chamber' o,y is entirely filled or emptied.

The operation of my improved tra'p is as 'followsz The Water of condensation from the system to be drained enters the pipe f and passes in the direction of the arrow marked thereon in Figs, l and 2 into the pipe @by whieh pipe the water is conducted tothe chamber a, the vent Z' being opened, if neeessary, at the beginning of the operation. This vent, if opened atall, is to provide for the eseape of air at the first operation, after vrhieh it is Closed. The chamber o. is closed against the admission or aeeess of air in order i'. provide tor the formation of a, vacuum as above described. Then the Water has accumulated in the ehan1- bei' d until its weight is suiiieient to overoon'ie that ofthe weights o' and m, the chamber vrill descend u util it comes in contact with the stop 7;,the hall-weight m then rolling to the position indicated by dotted lines in Fig. 2. This movement of the chamber and of the shaft o imparts a rotary movement to the valve casing it2 and the sleeve i, this movement ol' the sleeve around the stem i", which is prevented from turning h v means of the pins 'I' i2, resulting in the lifting of the valve from the seat j, rlhis allows the live steam from the boiler to enter thenpper end of the ehann ber a by means of the pipe lr", the pressure of the steam then causing the Water to flow out of the chamber d and through the passages d and e to and through the pipe fand to the.

steam therein and form a vacuum, resulting in aiding the passage of Water of condensation from the hea-ting system into said chamber.

I elaiinl. A steam-trap eomprisine'in its construction a shaft mounted to turn in bearings and provided with a longitudinal passage in each end, branch pipes connected `with one end 7o thereof, one ot' the branch pipes being adapted to be eonnected to the system to be drained and the other to the boiler, a chamber rigidly Connected with the said shaft to turn therewith and adapted to receive Water from one of said branch pipes and discharge it through the other, a counterbalanee for the chamber,

a iive-steam-supply pipe connecting the upper portion. of the chamber with the passage at the other end of the shaft, and a valve lo- Se cated within said shalt and operated by the movements of the chamber to admit steam to the chamber and to out it off therefrom ,Wherebv a vacuum may be formed in the chamber after cutting oit the steam, so as to facilitate S5 the entrance of Water to the chamber from the system to be drained.

In a device of the character specified, the combination with the pipes I1 and 7i mounted in bearings, the chamber oy connected at its 9o lower end with the pipe i; and adapted to turn therewith and with the pipo 71, the pipe rl connecting the pipe 7i with the upper portion of the chamber, the pipe h3 for live steam and having its end provided with a valve-seat, and g5 valve operated toward and from the said seat by the oscillation of the pipe h, the said valve being movable in the direction of the axis of said pipe.

ll. lnadevioe of the character spcciiied,1he reo Combination with the stationary pipe 7a3 having a valve-seat and the guides z i, the casing h2 mounted to rotate on the pipe lr, the valve having the threaded stem i" and fitted to the said guidesy and the threaded sleeve i" connected to rotate with the easing 7L?.

et. ln a device of the character specified, the combination with the stationary pipe h having a valve-seat and the guides z" il, the casing 7i2 mounted to rotate on the pipe 71.3, the valve zio having the threaded stem r and fitted to the said guides, the threaded sleeve i" having the ilanges T provided with fluid-passages, and an adjusting-screw 'if' passing through the casing and engaging with a portion of one of the flanges, substantially as described.

In testimony whereof I have signed my name to this specification, in the presence ol' two snbsrihing witnesses, this ltlrday oi May, A. l). i806.

BL'l't'lOh' W. iiliiii,

Witnesses:

.Hormon .lnowm A. D. linninsox. 

